The issue today, is that
friends to play with
is a luxury many don't have, at least not the way it was.
The other kids have devices, internet, etc and that's how they connect, so if you aren't meeting them there you're getting left out.
I don't say this to suggest you throw up your hands and give up, but it's a real complication to abstinence only plans.
My kid is just entering this stage and it's really tough.